Measurements:
°C
°F
CURRENT WEATHER
09:39
New Castle
64°F
SW 6 mph
Feels like: 64°F
Precip: 4%
World Resorts USA New Castle Weather

14 Day Weather Forecast

09.15
tue
DAY
74°F
NW 6 mph
precip
1%
NIGHT
62°F
NW 4 mph
precip
8%
09.16
wed
DAY
78°F
NE 3 mph
precip
2%
NIGHT
70°F
N 4 mph
precip
11%
09.17
thu
DAY
82°F
N 7 mph
precip
2%
NIGHT
74°F
NE 6 mph
precip
12%
09.18
fri
DAY
84°F
S 7 mph
precip
5%
NIGHT
70°F
S 3 mph
precip
5%
09.19
sat
DAY
74°F
W 6 mph
precip
19%
NIGHT
72°F
N 7 mph
precip
14%
09.20
sun
DAY
90°F
E 10 mph
precip
9%
NIGHT
74°F
S 5 mph
precip
61%
09.21
mon
DAY
80°F
W 5 mph
precip
14%
NIGHT
72°F
W 8 mph
precip
23%
09.22
tue
DAY
72°F
W 12 mph
precip
22%
NIGHT
70°F
W 6 mph
precip
32%
09.23
wed
DAY
80°F
NE 2 mph
precip
35%
NIGHT
76°F
N 2 mph
precip
82%
09.24
thu
DAY
78°F
S 7 mph
precip
25%
NIGHT
70°F
N 3 mph
precip
51%
09.25
fri
DAY
76°F
SE 9 mph
precip
13%
NIGHT
62°F
S 6 mph
precip
14%
09.26
sat
DAY
68°F
S 6 mph
precip
11%
NIGHT
62°F
SW 4 mph
precip
15%
09.27
sun
DAY
68°F
S 12 mph
precip
7%
NIGHT
60°F
S 9 mph
precip
13%
09.28
mon
DAY
64°F
W 10 mph
precip
13%
NIGHT
58°F
W 6 mph
precip
17%

New Castle Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for New Castle was 81.5°F. The maximum and minimum values were 78.6°F and 83.2°F respectively.

New Castle on the Weather Map

Best Time to Visit New Castle
The most sunny months:
November 17 days
October 16 days
June 15 days
The most warm months:
July 89.9 °F
August 86.4 °F
June 83.9 °F
Warmest sea temperature:
July 84.1 °F
August 83.4 °F
September 77.2 °F
The most cold months:
January 37.3 °F
February 40.7 °F
December 42.3 °F
The most rainy months:
July 3 days
August 3 days
June 2 days
The most windy months:
March 9 mph
April 9 mph
January 8 mph
more details
USA Resorts:
NAME
F°
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +72
Sarasota +86
Washington +66
all resorts
24 Hours Weather Forecast
New Castle
Local time: 09:39
15 sep, tuesday
1200 74°F
NW
6 mph
1500 80°F
N
4 mph
1800 74°F
N
7 mph
2100 64°F
NW
6 mph
16 sep, wednesday
0000 62°F
NW
4 mph
0300 60°F
NW
2 mph
0600 60°F
NW
1 mph
0900 68°F
N
4 mph